5) Misty Knight
As previously stated, it has been confirmed that Colleen Wing will appear in Iron Fist, as played by Jessica Henwick. If Wing’s appearing in the show, though, it would be strange for her not to be joined by her frequent partner in crime (fighting), Misty Knight.
A former cop, Misty lost her arm on the job. Once she had it replaced with a supercool bionic one (courtesy of Tony Stark), she left the force and opened up a detective agency with her friend Colleen. Of the two, she’s probably the one with the bigger connection to Danny Rand, having a long-running relationship with him in the comics.
Those of you in the know might be aware that Misty is already set to appear in Luke Cage, with Simone Missick having been cast in the part. So, it really wouldn’t be too hard for the character to crossover onto Iron Fist.